More than 6,000 travelers—from the Bay Area to Virginia Beach to Chicago…and well beyond—will descend on the heart of Sonoma County April 29–30, from 11:30 a.m. to 4:30 p.m. Visitors will explore the uniqueness of Dry Creek Valley, a premium winegrowing region of special terroir, as they collect stamps on their “passports” from as many of the participating wineries they can fit in during their visit. As they sample the offerings from world famous wineries like Ridge Vineyards and Ferrari-Carano and boutiques like Nalle and Talty, which make fewer than 2,000 cases a year, Passport-goers will learn of the sixteen-by-two-mile valley’s variety of growers and grapes, world-class zinfandels, and 10,000 acres of stunning beauty.

“In big wine books, there used to be maybe one sentence, if anything, about Dry Creek Valley. Now, there are pages,” David Stare, founder of Passport, tells the Chronicle. He credits the event with putting the valley on the wine-growing map. “Our region was relatively unknown, an obscure viticultural area. We had great vineyards planted in the 1850s and 60s, but they were dormant,” he says.

Stare founded Dry Creek Vineyard in 1972, the area’s first new winery since Prohibition and one of only three in existence at the time. In 1990, he came up with the idea for Passport after sailing with the Nautical Heritage Society and collecting whimsical “passport” stamps at every American port. Now, Passport is one of California’s longest-running regional wine events and is put on by the Winegrowers of Dry Creek Valley, a multigenerational family community of vintners and growers.

For 2017, Passport is joining forces with the San Francisco Chronicle’s “The Press” to bring the best of what Sonoma Wine Country has to offer. Festival highlights will include Dry Creek Vineyard, celebrating 45 years of family winemaking, with pairings inspired by Chile’s Cape Horn; Reeve Wines, throwing a “yacht rock” shindig with songs you “hate to love” and seaworthy fare by Lowell Sheldon; and Wilson Winery, serving Mount Olympus with its “Goddess of Wine,” winemaker Diane Wilson, DJ FizNik Rick, and Greek Isles cuisine. Guests will also have the opportunity to schmooze with the likes of Michelin-starred chef Charlie Palmer, Diavola chef/owner Dino Bugica, Bistro 29 chef/owner Brian Anderson, and other culinary artists of Sonoma, while savoring their inspired foodie creations paired with limited-edition vinos.

Meanwhile, Beatles and Jacktones cover bands will jam out, Mile Swing will sing Hawaiian tunes, and musical groups of every style, from bluegrass to jazz to Motown, will play together into the Dry Creek Valley air. Winery concepts range from the glamorous—think Prohibition-era speakeasy—to the goofy—think Caddyshack, after all.

General admission tickets cost $135 for both days and $80 for Sunday only, and a daily Designated Driver ticket is only $55. Additionally, for $200, folks can travel First Class, with one Prelude Dinner and a vineyard designate experience. For $130, they can visit as a Frequent Flier, with one Prelude Lunch and a vineyard designate experience. (The Passport Prelude is Friday, April 28; a Prelude Lunch is $75, and a Prelude Dinner costs $150.) Take a vineyard tour in the morning on Saturday or Sunday for just $25.